It’s possible — and this is pure conjecture — that Amazon is trying to avoid a situation similar to what happened to The War Z on Steam. That game made a few minor claims on its product page that weren’t actually true in the game yet. Angry players lobbied Valve for refunds until the company agreed and pulled the game from its shelf.

If SimCity’s product page says it has leaderboards on Amazon, and the game doesn’t have leaderboads, customers could demand a refund even if the situation is only temporary. Amazon is probably just trying to stay out of this mess while things are still so volatile.